[PATCH] net/compat.h build fix

From: Andrew Morton <akpm@osdl.org>

Move the forward decl outside the ifdef, since we use it in both legs.

Should fix the spacr64 build error reported in
	http://bugzilla.kernel.org/show_bug.cgi?id=6625

Acked-by: "David S. Miller" <davem@davemloft.net>
Cc: Cedric Pellerin <cedric@bidouillesoft.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

include/net/compat.h

@@ -3,6 +3,8 @@
 
 #include <linux/config.h>
 
+struct sock;
+
 #if defined(CONFIG_COMPAT)
 
 #include <linux/compat.h>
@@ -23,7 +25,6 @@ struct compat_cmsghdr {
 	compat_int_t	cmsg_type;
 };
 
-struct sock;
 extern int compat_sock_get_timestamp(struct sock *, struct timeval __user *);
 
 #else /* defined(CONFIG_COMPAT) */